单选题 Jim was ______ asking his mother to buy him a new bike, so she finally gave in.
【正确答案】 D
【答案解析】[解析] 题干：Jim一直缠着让妈妈给他买一辆新自行车，最后妈妈答应了。本题考查词组。hesitant about“犹豫不决”，concerned with“关心”，eager for“急切”，persistent in“坚持不懈”。根据上下文语义，本题正确答案为D。